Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Charlotte Anne Byron, RN, MSN, FNP

Family Nurse Practitioner in Pasadena, CA · enumerated 2006 · practices at Ayad Alanizi, MD, Inc..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1255495891

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Registry record

Entity type Individual (Type 1)

Name Charlotte Anne Byron

Credential RN, MSN, FNP

Sex Female

Practice address 127 N Madison Ave Ste 106, Pasadena, CA, 91101

Phone (626) 744-9018

Fax (626) 744-9075

Enumeration date Dec 20, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN 388162 (CA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Charlotte Byron practice?

The practice location on file with NPPES is in Pasadena, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Charlotte Byron?

The National Provider Identifier (NPI) for Charlotte Byron is 1255495891, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Ayad Alanizi, MD, Inc. Primary Care Clinic/Center · Pasadena, CA NPI 1679826226

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.